Langer Grund viaduct
Coordinates: 50 ° 35 ′ 11 ″ N , 10 ° 41 ′ 38 ″ E
 Langer Grund viaduct
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| Convicted | Federal motorway 73 | |
| Subjugated | Wallersbach | |
| place | Suhl | |
| construction | Prestressed concrete box girder bridge |
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| overall length | 372 m | |
| width | 2 × 14.25 m | |
| Longest span | 49 m | |
| Construction height | 3.5 m | |
| height | 63 m | |
| building-costs | 12 million euros | |
| start of building | 2002 | |
| completion | 2004 | |
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The Langer Grund viaduct is a 372 m long bridge on the A73 motorway at km 5.3.
The structure is located near Suhl between the Suhl-Zentrum and Suhl-Friedberg motorway junctions in southern Thuringia . It spans the Langer Grund valley with eight fields at a maximum height of 63 m. The overpass with two separate superstructures was built between 2002 and 2004 for around 12 million euros.
Substructures
The bridge piers with a maximum height of around 58 m are divided into two slender individual columns, which are spaced 3.6 m apart and are connected to each other by crossbars. The supports have a rectangular full cross-section and decrease over the height with a ratio of 1:70.
Superstructures
The two adjacent superstructures of the prestressed concrete bridge have the continuous beam as a structural system in the longitudinal direction . In the transverse direction, they each have a hollow box cross-section with a constant construction height of 3.5 m. The prestressing consists of a mixed construction with internal and external tendons .
The total span for the eight-span bridge is 372.0 m. The two end fields span 39.0 m, the six inner fields each have 49.0 m span.
execution
The bridge superstructure was constructed using the incremental launching method.
literature
- Proceedings: 13th Dresden Bridge Construction Symposium . March 2003